From d4ccedc50d7b74a2044784179496287a4c38c5cb Mon Sep 17 00:00:00 2001
From: Mindy Preston <mindy.preston@docker.com>
Date: Wed, 30 Nov 2016 15:03:35 -0600
Subject: [PATCH] for compiler version 4.04, set OCAML_OS_TYPE to "xen"

---
 xen-ocaml/build.sh          |  1 +
 xen-ocaml/os-type-xen.patch | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 xen-ocaml/os-type-xen.patch

diff --git a/xen-ocaml/build.sh b/xen-ocaml/build.sh
index 7a0adc6..a733275 100755
--- a/xen-ocaml/build.sh
+++ b/xen-ocaml/build.sh
@@ -55,6 +55,7 @@ case `ocamlopt -version` in
   echo Applying OCaml 4.04 config
   cp config/version-404.h ocaml-src/byterun/caml/version.h
   patch < clambda-warnings.patch -p 0
+  patch < os-type-xen.patch -p 0
 esac
 
 cp config/s.h ocaml-src/config/
diff --git a/xen-ocaml/os-type-xen.patch b/xen-ocaml/os-type-xen.patch
new file mode 100644
index 0000000..122f164
--- /dev/null
+++ b/xen-ocaml/os-type-xen.patch
@@ -0,0 +1,10 @@
+define OCAML_OS_TYPE as "xen".  Only a good idea for compiler versions >= 4.04.0.
+See https://github.com/mirage/mirage-platform/pull/78/ .
+--- config/s.h
++++ config/s.h
+@@ -1,4 +1,4 @@
+-#define OCAML_OS_TYPE "Unix"
++#define OCAML_OS_TYPE "xen"
+ #define OCAML_STDLIB_DIR "/usr/local/lib/ocaml"
+ #define POSIX_SIGNALS
+ //#define HAS_GETRUSAGE